Drop a few drops of sewing machine oil or engine oil on the screw and it will fall off after half an hour. Infiltrate with engine oil, then beat with a hammer, then shake it loose, and then unscrew it with an afterburner wrench. According to the query information, remove the screws of the cooling module. This version of the fan is connected with the cooling copper tube. Therefore, it is necessary to remove it as a whole, pay attention to all aspects of wiring connection, cover it, squeeze it by hand first, and finally screw on the screws. After checking whether the number of screws is correct, clean them up.